ABS making noise

However, the most likely cause is a failing ABS speed sensor on one wheel. The only way to know which requires you to use a scan tool with live data and watch each sensors reported speed as you stop. One of them is dropping to 0 mph before the others and the ABS thinks the tire is locked up and applies the ABS to help you stop.
No way to know which corner it is without the scan tool though. Most of the lower cost ones that display live data should show it If they do ABS and the live data shows wheel speeds.

C0245 - is a code indicating a speed sensor difference between the two front wheel speed sensors. The common cause for this is having two different sized tires, either in physical size or one has low air pressure. On newer GMs with sensor based TPMS this is one of the tests done to find a low tire, the system compares the wheel speeds at all four tires. If one tire shows a constant higher speed than the other the system concludes it has low pressure as the rpm's and mph of the tire increases relative to the other three.

The next common reason is a failing sensor or connector that is not transferring the voltage the sensor is generating properly.

If you have four tires of the same make, model and size and all four are within 1-2 PSI of each other then the issue is likely the sensor or wiring. The only way to know which is to watch the actual reported speed on a scan tool to see which sensor is the problem. It also may set a code in the ABS module but not always as some only code for a shorted or opened sensor that shows no signal. One that is sending a signal but it is not correct would give the code you have.

It can set that code as the system sees a speed difference between the tires. ABS and traction controls are really picky at times and they have gotten even more sensitive over the years.
When that car was built it would have had the OEM tire size (225/60-16) programmed into the PCM and ABS systems. Both use that tire size (within a few percent to account for manufacturing differences) as the baseline. It knows that tire turns right around 760 revolutions per mile. However the 215/60-16 tires turn about 2% faster at 780 rpmile.

Now that 2% should not set this particular code as it looks for a difference of 4% or more to trigger it, but that difference could easily trigger the ABS itself as the tires are rolling at different speeds and if any of the sensors are starting to go outside the normal signal range it will think that tire is sliding as you apply the brake.

This exact code usually indicates a single axle mismatch. So a difference in speed side to side on either front or rear axles will set it. For that you need to use a scan tool and verify the codes you have and what the four corners are reporting as their actual speeds.

The 1998 did not use the same control system as the 2002 does and was not as sensitive.

It depends on what is actually causing it. As I said that code is normally for a single axle so if both front tires match and both rear tires match there is still an issue because they match on each axle. The ABS activation issue should go away if all four tires match but the code is not from that, it could be a bad sensor that has rust under it or poor wiring. No way to know unless you use the live data.
They probably will not scan for what you need because you need to see the live data and the car has to be moving for that. Basically you need to drive around while watching all four wheel speed sensors for problems. Most of the folks working in those stores do not know how to do that, they will pull codes but they will not ride around with you.